Post by: dawesy on February 01, 2015, 11:11:27 AM
Turned from alloy bar (not sure of grade) with a 12tpi thread.
Quite happy with how it's turned out for my first real attempt.
Ready for boring.
(http://i80.photobucket.com/albums/j183/dawesy_2006/lathe/E9E2377E-BF9F-463B-B1AB-4FC42CD008C5_zpskjxadnt3.jpg)
All done.
(http://i80.photobucket.com/albums/j183/dawesy_2006/lathe/CB278897-379E-4EDF-9C70-A11FBA0785A6_zpswlnmyeat.jpg)
(http://i80.photobucket.com/albums/j183/dawesy_2006/lathe/EE4670CA-0C6E-411D-B7D6-AE30F964877E_zpsopsbej2u.jpg)
Now to make a cap for it :)
Post by: steampunkpete on February 01, 2015, 11:52:02 AM
If you don't mind us asking, what is it a filler-cap for?
Would an undercut to thread root diameter at the inner end of the thread have made life easier, or couldn't you do that for this application?
Post by: dawesy on February 01, 2015, 01:21:03 PM
I've turned bits but this is really the first bit with threading etc.
it's for a water/ methanol tank.
It's not clear from the pics but there is a thread undercut against the shoulder.
Parting off was really the toughest bit although I now have to make a cap that fits lol.
Post by: krv3000 on February 01, 2015, 03:12:08 PM
Post by: Bangkok Mick on February 01, 2015, 08:53:39 PM
Post by: dawesy on February 01, 2015, 11:51:13 PM
Think I've got the hang of screw cutting now. Just took my time.
Need to make some more change wheels for the lathe though as I'm a few missing which limits the threads I can cut :(
Post by: vtsteam on February 02, 2015, 11:20:09 AM
Post by: RussellT on February 02, 2015, 12:24:43 PM
Have you decided where the seal is going to go - or is is going to do without?
Russell
Post by: Stilldrillin on February 02, 2015, 02:35:43 PM
Well done..... :clap: :clap:
David D
Post by: RotarySMP on February 02, 2015, 04:50:08 PM
Obviously really shiny grade. Robert that same alloy.
Mark
Post by: dawesy on February 03, 2015, 04:49:27 AM
Yep all done on the old Churchill ;)
Cap all done now bar knurling
(http://i80.photobucket.com/albums/j183/dawesy_2006/lathe/C0286869-1621-4260-A23A-CF5ADA94DEFB_zps0cjtcfzo.jpg)
Seals going in the cap Russell
You can just about see the undercut in this pic
(http://i80.photobucket.com/albums/j183/dawesy_2006/lathe/2C14EF4A-C732-4A4D-9510-5E5C3865F178_zpsavekai2v.jpg)
Going to practice knurling first before I do the cap :/
Also going to trim down the threads on the neck as I think I must have knocked the verniers when I measured it to get the depth for the cap :(
Post by: BillTodd on February 03, 2015, 03:23:58 PM
Post by: dawesy on February 03, 2015, 04:07:57 PM
Post by: PJW on March 19, 2015, 09:23:12 AM
Peter
Post by: dawesy on March 19, 2015, 09:24:34 AM
(http://tapatalk.imageshack.com/v2/15/03/19/f760302fc0fa2c814a5e26494d4cf322.jpg)
Post by: RobWilson on March 19, 2015, 02:39:37 PM
Whats the tank for /to be fit to ?
Rob
Post by: dawesy on March 19, 2015, 04:38:39 PM
Still got to turn and weld the bosses for the level tube and take off.
This is it in situ
(http://tapatalk.imageshack.com/v2/15/03/19/4ae4202c93cf670c27611b6671212f70.jpg)
Sample of the alloy has been sat in the water/methanol mix for a while now and no signs of a reaction yet.
Post by: RobWilson on March 19, 2015, 05:12:42 PM
Welding looks looks very tidy :dremel:
Rob
Post by: dawesy on March 19, 2015, 08:46:34 PM
Welds aren't as smooth as I'd like but I'm still learning and aluminium is a hard mistress. Doesn't help that my foot pedal has given up the ghost
